
.content{
    width: 90%;
    margin: 0 auto;
    text-align: center;
}


.main-box .content h5{
    color: rgb(122, 122, 122);
}

.main-box .content li{
    width: 600px;
    margin: 20px auto;
}

.main-box .content li img{
    width: 100%;
}
.main-box .words{
    width: 80%;
    margin: 0 auto;
}
.main-box .words p{
    text-indent: 2em;
    margin: 10px;
    font-size: 16px;
}

.main-box .content li video{
    width: 100%;
}


@media screen and (max-width: 767px){
    .main-box .content li{
        width: 100%;
    }
}